Abdominal thrusts, also known as the Heimlich maneuver or Heimlich manoeuvre, is a first aid procedure used to treat upper airway obstructions (or choking) by foreign objects. American doctor Henry Heimlich is often credited for its creation. Performing abdominal thrusts involves a rescuer standing behind a patient and using their hands to exert pressure on the bottom of the diaphragm. This compresses the lungs and exerts pressure on any object lodged in the trachea, hopefully expelling it.

Most modern protocols, including those of the American Heart Association, American Red Cross and the European Resuscitation Council, recommend several stages for airway obstructions, designed to apply increasingly more pressure. Most protocols recommend encouraging the victim to cough, followed by hard back slaps, and finally abdominal thrusts or chest thrusts as a last resort. Some guidelines also recommend alternating between abdominal thrusts and back slaps.